However, you could use some creative options depending on the context:
* A torrent of babble: This emphasizes the overwhelming nature of the noise.
* A cacophony of babble: This highlights the discordant and confused sound.
* A buzz of babble: This suggests a lively and energetic atmosphere.
* A murmur of babble: This implies a quieter and more subdued sound.
Ultimately, the best collective noun to use will depend on the specific situation and the desired effect.